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VetMed Resource

Veterinary information to support practice, based on evidence and continuing education

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Abstract

Two studies were conducted, one in Quebec, Canada and one in Idaho, USA, to determine the persistent efficacy of doramectin pour-on against an artificial, trickle challenge of mixed nematodes in calves. In each study 42 Holstein calves, 4-8 months old and kept indoors, were randomly assigned to 4...

Author(s)
Molento, M. B.; Trudeau, C.; Prichard, R. K.; Zimmerman, G. L.; Johnson, E. G.; Marley, S.; Conder, G. A.
Citation
Veterinary Parasitology, 1999, 82, 4, pp 297-303
Abstract

In Ontario and Quebec, it was shown that D. viviparus larvae can both overwinter on pasture and remain dormant in the host animal throughout the winter months. Carrier animals appeared to be the more important source of infection. Preventive measures were suggested, -MGG.

Author(s)
Gupta, R. P.; Gibbs, H. C.
Citation
Canadian Veterinary Journal, 1970, 11, pp 149-156
Abstract

P.M. examination of 9, 766 pairs of lungs from young and adult animals over a period of two years showed that 3% were infected with D. vivíparus There was a higher incidence of infection in younger (4%) than in older animals (1%). The disease showed a marked seasonally, autumn being the time of...

Author(s)
Gupta, R. P.; Gibbs, H. C.
Publisher
Macdonald Coll., Quebec,
Citation
Canadian Veterinary Journal, 1969, 10, pp 279-285